/Engine/Source/Runtime/SlateCore/Public/Widgets/SWidget.h
Find the geometry of a descendant widget. This method assumes that WidgetToFind is a descendant of this widget.
the geometry of WidgetToFind.
[FGeometry](API\Runtime\SlateCore\Layout\FGeometry) FindChildGeometry ( const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) & MyGeometry, [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > WidgetToFind ) const